Non-slipping tread.



F. H.-STANWO0D. NON SLIPPING'TREAD. g APPLICATION FILED NOV. 22. I9I5.

Patented May 30,1916.

Ufo' O o@ o @QQ board or any other desired location. The

upper surface of the coating 8 aside from 8 whe .theapurpose and subjecting the mol 1 usual treatment employed inthe making of the roughening effect provision of the ribs 9 vidingl smooth channels between the two series given it through the is smooth, thus probetween the ribs and of ribs shown in or- `der that the tread unit maybe readily cleaned and also in order to revent it accumulating matter which will unhygenic.

lt wil] be manifest that'the ribs 9 need not extend suilicieutly above the surface of the running-boa rd to enable an one entering the automobile to stumbleshoulyd their attention be directed elsewhere. The unit ina be oon-4 sheet or sti-acted by merely placing the meta quantity reinfol'ee in a mold with a suitable of rub er or other composition ada to the soft rubber articles.

It will be manifest also that the apertures ened ges to eat into the material of the coating au'd 7 in use, and that the soft undercoating will permit theplate when screwed down tightly to restili intimate con- 'l tact with thc running-board so that no dirt y sacrificing y tedforv per oration's for properly formed will leave no r0ughribs in line above said rows of 0f its material advantages, the form hereinbefore described' being merel s preferred embodiment thereof.

I cAaiin: d

1. nonp` tree com rising an internal metalohxygplate avin a Vplurality of spaced rows of perforations therethrough, and non-slipping, non-metallic inaterial molded about said plate and through said perforations and having an elon ated rib located above each of said rows o perforations, said havingl screw receiving openings and ing, otherwise imperforate bewensaidslelon ted ribs. 'l

nonippi tread com rising an internal'rigid metilg bod pla P rows of perforations to filled by the nonslip ing, non-metallic inatenal'and ha g screws, anda b ody of non-slip ing masurroundingmetal ed ow and terial, the saine `aspli above the bodg platean having integral arts in said rst mentioned rows of perorations and bein'gdormed with openings in line with the second mentioned securing perforations, said non-slipping body being ormed on its top surface with pm' perforations. In testimony whereof, I havehereunto set my hand in the presence of two subscribing n FRANK H. STANWOOD.

Witnesses:

J. C. Carnia-am, Tiros. J. OBlxxin A witnesses.-

ving

te formed with 

